In a future patch, the port I/O functions (`inb()`, `outb()`, and
friends will only be declared in the `HAS_IOPORT` configuration option
is enabled.
The amplc_dio200_pci module supports various Amplicon PCI and PCI
Express devices. Some of the supported devices (the PCI ones) use port
I/O, and some of them (the PCIe ones) only use memory-mapped I/O.
Conditionally compile in support for the devices that need port I/O if
and only if the `CONFIG_HAS_IOPORT` macro is defined.
Add a run-time check in `dio200_pci_auto_attach()` to return an error if
the device actually requires port I/O (based on the PCI BAR resource
flags) but the `HAS_IOPORT` configuration option is not enabled.
Cc: Arnd Bergmann <[email protected]>
Cc: Niklas Schnelle <[email protected]>
Signed-off-by: Ian Abbott <[email protected]>
---
v2: Correct `CONFIG_HAS_PORTIO` to `CONFIG_HAS_IOPORT` in commit
description.
---
drivers/comedi/drivers/amplc_dio200_pci.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/comedi/drivers/amplc_dio200_pci.c b/drivers/comedi/drivers/amplc_dio200_pci.c
index 527994d82a1f..cb5b328a28e3 100644
--- a/drivers/comedi/drivers/amplc_dio200_pci.c
+++ b/drivers/comedi/drivers/amplc_dio200_pci.c
@@ -223,14 +223,17 @@
*/
enum dio200_pci_model {
+#ifdef CONFIG_HAS_IOPORT
pci215_model,
pci272_model,
+#endif /* CONFIG_HAS_IOPORT */
pcie215_model,
pcie236_model,
pcie296_model
};
static const struct dio200_board dio200_pci_boards[] = {
+#ifdef CONFIG_HAS_IOPORT
[pci215_model] = {
.name = "pci215",
.mainbar = 2,
@@ -252,6 +255,7 @@ static const struct dio200_board dio200_pci_boards[] = {
.sdinfo = { 0x00, 0x08, 0x10, 0x3f },
.has_int_sce = true,
},
+#endif /* CONFIG_HAS_IOPORT */
[pcie215_model] = {
.name = "pcie215",
.mainbar = 1,
@@ -364,8 +368,12 @@ static int dio200_pci_auto_attach(struct comedi_device *dev,
"error! cannot remap registers\n");
return -ENOMEM;
}
- } else {
+ } else if (IS_ENABLED(CONFIG_HAS_IOPORT)) {
dev->iobase = pci_resource_start(pci_dev, bar);
+ } else {
+ dev_err(dev->class_dev,
+ "error! need I/O port support\n");
+ return -ENXIO;
}
if (board->is_pcie) {
@@ -385,8 +393,10 @@ static struct comedi_driver dio200_pci_comedi_driver = {
};
static const struct pci_device_id dio200_pci_table[] = {
+#ifdef CONFIG_HAS_IOPORT
{ PCI_VDEVICE(AMPLICON, 0x000b), pci215_model },
{ PCI_VDEVICE(AMPLICON, 0x000a), pci272_model },
+#endif /* CONFIG_HAS_IOPORT */
{ PCI_VDEVICE(AMPLICON, 0x0011), pcie236_model },
{ PCI_VDEVICE(AMPLICON, 0x0012), pcie215_model },
{ PCI_VDEVICE(AMPLICON, 0x0014), pcie296_model },
--
2.40.1